Keelmen Heaving in Coals by Moonlight

What you see

The full moon shines high in the center, opening a bright gap in the clouds. Below it, the river stretches back to the horizon. Tall sailing ships glide on the left with sails spread; on the right, dark hulls, masts and rigging crowd together where the boatmen work beside fires. A round buoy and a raft float in the foreground.

Silvery blues and whites fill the sky and the water, where the moonlight falls in a shimmering path. Only on the right does warm orange appear, from fires wrapped in smoke. The clouds are painted in curving strokes that form a kind of vault. Seek out the small figure sitting on the raft, near the bottom center.